As the dad was pounding in one of the stantions the earth gave. The dad and the daughter dropped 20 feet into an underground river. The dad grabbed his daughter and managed to keep both of their heads above water until they found a place to get out.
The two looked around to find that they were in a giant cavern with sparkling gems of all colors. The little girl couldn't help her self from picking a couple of gems from the cavern walls. They were so beautiful.
That made me think of the Brendan Frasier movie, Journey To The Center Of The Earth. Good movie actually. I liked his Return of The Mummy movies more.
Anyway....good dragon story.